Anomalies discovered during a Sept. 12 hot-fire test, coupled with upcoming missile tests at the Vandenberg Air Force Base in California, have delayed the inaugural launch of SpaceX's Falcon 9 v1.1 rocket to the end of September, CEO Elon Musk said Sunday

The Cygnus spacecraft, which is built by aerospace firm Orbital Sciences, passed its launch readiness review and is now set to lift off Wednesday from NASA's Wallops Flight Facility in Virginia, officials announced Monday (Sept. 16).

A commercial Antares rocket rolled out to its Virginia coast launch pad Friday carrying a brand-new Cygnus supply ship poised to make its debut test flight to the International Space Station on Wednesday.

SpaceX aims to launch an upgraded version of its Falcon 9 rocket from a newly refurbished pad at California's Vandenberg Air Force Base on Saturday (Sept. 14) in a mission that will also attempt to recover the rocket's first stage.

Serial innovator Elon Musk is living up to his reputation as a real-life Tony Stark. In a new video, Musk shows off the excessively cool "Iron Man"-like tech that is quite literally at his fingertips inside the rocket-making labs of his company SpaceX.

The DC-X (Delta Clipper Experimental) was a prototype for a reusable space launch vehicle tested in the 1990s. See how fully reusable launch vehicles are envisioned to work in this SPACE.com infographic.

The private spaceflight firm SpaceX has notched a key milestone in its quest to launch humans to orbit, just three days after company founder and CEO Elon Musk unveiled his futuristic "Hyperloop" transportation concept to the world.

SpaceX's reusable rocket prototype, dubbed Grasshopper, is designed for vertical takeoffs and landings, but in the commercial spacecraft's latest test flight, Grasshopper proved it could hop sideways, too.

The Falcon 9 test rig (codenamed Grasshopper) successfully completed a 'divert' test, with the ship making a 100m lateral maneuver while reaching an altitude of 250m. This test demonstrated the ships ability to make more aggressive maneuvers.

The super-fast "Hyperloop" travel concept is just the latest in a series of big, bold dreams by billionaire entrepreneur Elon Musk. Here's a quick look at six ways the South African-born billionaire has changed the world — or is hoping to in the future.

Billionaire entrepreneur Elon Musk's vision for a futuristic Hyperloop transportation system concept involves sleek passenger capsules flying within a tube on a cushion of air. See how the ultra-fast system could get from N.Y. to S.F. in 30 min.

Billionaire entrepreneur unveiled new details today about his "Hyperloop" project, a superfast transportation system that could ferry passengers between Los Angeles and San Francisco in 30 minutes. Can it really be built?

The Hyperloop, Musk revealed today (Aug. 12), is a solar-powered transportation system that could rocket passenger-packed pods through long tubes at 760 mph or so (1,220 km/h). The technology could cut the LA-San Francisco travel time to 30 minutes.

The fevered speculation about billionaire entrepreneur Elon Musk's mysterious "Hyperloop" transport system is about to come to an end. Musk has said he will unveil a design Monday after teasing us about the travel technology for more than a year.

The fevered speculation about billionaire entrepreneur Elon Musk's mysterious "Hyperloop" transport system is about to come to an end. Musk has said he will unveil a design Monday after teasing us about the travel technology for more than a year.

An engineering model of California-based startup Made in Space's 3D printer passed a battery of tests, confirming that the machine can survive the rigors of launch and function in a microgravity environment.

NASA on July 19 released a draft solicitation for the fourth and final development phase of its Commercial Crew Program, which is still expected to result in a crewed space launch to the International Space Station from U.S. soil, by late 2017, according

How would you like to zip from Los Angeles to San Francisco in less than 30 minutes, on the cheap and on your own schedule? Billionaire entrepreneur Elon Musk says it can be done, and he's going to tell us how next month.

The private company SpaceX has been narrowing its search for a new location in which to build a commercial launch facility for industrial customers. The firm has recently focused on Florida, Georgia, Puerto Rico and particularly Texas.

A private company's prototype reusable rocket made its highest leap to date last month, soaring 100 stories into the air before landing softly back at its launch pad as planned. SpaceX's Grasshopper vehicle reached a maximum altitude of 1,066 feet on June

SpaceX Senior Engineer Garrett Reisman (former NASA Shuttle astronaut) is helping to get the U.S. back into the manned spaceflight business. He is tasked with retrofitting the SpaceX rocket/capsule to carry humans.